test(output_engine): fixed black and flake8 issues

Author: JigyasuRajput

test/test_output_engine.py

@@ -1608,7 +1608,7 @@ def test_html_output_with_non_standard_severity(self):
         html_content = outfile.getvalue()
         # Check that the output contains "HIGH"
         self.assertIn("HIGH", html_content)
-        
+
     def test_output_with_unset_fields(self):
         """Regression test for unset optional fields (e.g. sbom_serial_number)"""
         fields_to_test = ["sbom_serial_number"]